sometimes i used to see the occassional alt/rat bike with the big 60-someodd tooth sprocket from an exercise bike on it. i picked up one of these today and i'm considering what i might use it on.
but i'm also wondering, if anyone has one, how practical a rider you've been able to make it. seems like you'd need pretty flat going as a single speed, or a cluster with huge low gear sprocket.
anyway, just wondering if anyone has any experience with one. thanks.